Safety-fuse



mmm A. F. ANDREWS.

SAFETY FUSE;

No. 424,449. Patented Apr. 1. 1890.

Witnesses z Zvento JWM 'To all whom it'may 'concer-'iii' actions-coated withltnrint Nextrandoutside V Be it known that I, ALBERT F. ANDREWS, this cotton'tube just mentioned is tube e,

" of Avon', in the county of Hartford ,andvStatef`-fox-med-of g'nte yarn'wound spil-ally in a direc' lot' Connecticut, have invented a certain 'newV tion opposite thatof theouter spiral of tlietnbe 3o' and useful Improvement in Safety-Fuses, of d.- {Outside the whole isa coator tube f, of splf' which the following is a description, referrally-woundcotton yarmthe spiralthereof-run` ence being had to the accompanying durawf ning vin the direction opposite that of the spif'y ing, where the ligure is an enlarged view,fi-n' ral of the uteyarn Ae, The tube d maybe section, of a piece of safety-fuse mede iii aci' made of lcotton clotli,'and the coat f-may 'be aj 35 1o cordance with my improvement. tape,withon departing from the spirit'of the, f From practical experience it seems tobe ai lmproven'ie'nt AThe 'tarred oottontub'e d efff' necessity to use oil in and on jute in 'the pro-ffectnally prevents the oil lof the juteyam cess -ofmaking it into the` jute yarn forthe .from having accessV to the 'central lining/'of A f-above purpose-at least the jute-yarn Whichi gunp'ovvder.` gk nl 4f. fopen -g igoomes -to a 4fusemaker always ,contains more Ilaim asin? improve entg- ".o'less oil;` Putting 'jute yarQth'us containp` .A'sfet ffuse bavingafentrai". iilliugtf V:ing oil, in contact with the g'unpowder has a" gupowderlat be off t'arred cottninextthe `eadening and deleterious eiectvon the gun-41 tp'c'yvd'er, ajub'e 'ot-finte next 'outside saidfcot `"powdengpilfi-j .'toi1,tnbe,nd`riextjandKontside said jute'a Thelobject1ofgthe present'impro. men'ljI-S, 't be'fl'vottomallsubstantially sdescribe o.i*etinthe`jte, but prevent its `ol ioxun*y 7d "t' 1"lie purposefsetorth; A

Y coming in contact with the gunpowder.. .ff' l" L .f f f In the figure the letter a denotes a'centra'l -ALBERTTl ANDREWS; A filling of gnnpowder. Nefit, and outside thev 'Y Witnesses:l

2 5" powder, is a tube d of cotton yarn composed A. B. JENKINS;-

of two layers wound sprally in opposite di- 'f H. E. BACHARACH. 

